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Income Taxes Income Taxes (Tables)
3 Months Ended
Nov. 30, 2020
Income Tax Disclosure [Abstract]  
Income Tax Effective Tax Rate [Table Text Block] Comparative earnings before income taxes, income tax expense and effective income tax rates from continuing operations are as follows (in thousands):
 Three Months Ended November 30,
 20202019
Earnings from continuing operations before income tax expense$7,080 $7,322 
Income tax expense2,258 950 
Effective income tax rate31.9 %13.0 %